Class.h (JV_STATE_LOADING): Added comment.

* java/lang/Class.h (JV_STATE_LOADING): Added comment.
	* Makefile.in: Rebuilt.
	* Makefile.am (nat_source_files): Added natSystemClassLoader.cc.
	* gnu/gcj/runtime/natSystemClassLoader.cc: New file.
	* gnu/gcj/runtime/SystemClassLoader.java (nativeClasses):
	New field.
	(loadedClasses): Removed.
	(findClass): Declare.
	(addClass): Add to nativeClasses, not loadedClasses.

From-SVN: r113530

libjava/gnu/gcj/runtime/SystemClassLoader.java

@@ -22,7 +22,9 @@ public final class SystemClassLoader extends URLClassLoader
     super(new URL[0], parent);
   }
 
-  private HashMap loadedClasses;
+  // This holds all the "native" classes linked into the executable
+  // and registered with this loader.
+  private HashMap nativeClasses = new HashMap();
 
   // This is called to register a native class which was linked into
   // the application but which is registered with the system class
@@ -42,23 +44,11 @@ public final class SystemClassLoader extends URLClassLoader
       }
       
     // Use reflection to access the package-private "loadedClasses" field.
-    if (this.loadedClasses == null)
-      {
-	try
-	{
-	  Class cl = java.lang.ClassLoader.class;
-	  Field lcField = cl.getDeclaredField("loadedClasses");
-	  lcField.setAccessible(true);
-	  this.loadedClasses = (HashMap) lcField.get(this);
-	}
-	catch (Exception x)
-	{
-	  throw new RuntimeException(x);
-	}      
-      }
-    this.loadedClasses.put(className, klass);
+    nativeClasses.put(className, klass);
   }
 
+  protected native Class findClass(String name);
+
   // We add the URLs to the system class loader late.  The reason for
   // this is that during bootstrap we don't want to parse URLs or
   // create URL connections, since that will result in circularities

libjava/gnu/gcj/runtime/natSystemClassLoader.cc

@@ -0,0 +1,31 @@
+// natSystemClassLoader.cc - native code for system class loader
+
+/* Copyright (C) Free Software Foundation
+
+   This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
+details.  */
+
+#include <config.h>
+#include <platform.h>
+
+#include <gcj/cni.h>
+#include <jvm.h>
+#include <execution.h>
+
+#include <gnu/gcj/runtime/SystemClassLoader.h>
+#include <java/lang/ClassNotFoundException.h>
+#include <java/util/HashMap.h>
+
+jclass
+gnu::gcj::runtime::SystemClassLoader::findClass (jstring name)
+{
+  jclass result = (jclass) nativeClasses->get(name);
+  if (! result)
+    return URLClassLoader::findClass(name);
+  // Never return a class whose supers are not installed.
+  _Jv_Linker::wait_for_state (result, JV_STATE_LOADING);
+  return result;
+}